AeroSport for iPhone 4G - Black Active-use armband All-day comfort and a lightweight one-piece construction make AeroSport the ultimate active-use armband for athletes of every stripe. We start with a Lycra core for flexibility light weight and amazing comfort. The band is cut wide so it stays put comfortably without overtightening. Fit AeroSport to your arm then slide your iPod nano into place. You have complete access to your iPhone's Multi-Touch display and headphone jack with protection from fingerprints dust and scratches. A hidden pocket holds your house room or locker key.